tone
Version:
A Web Audio framework for making interactive music in the browser.
80 lines • 2.82 kB
JavaScript
import { ToneAudioNode, } from "../../core/context/ToneAudioNode.js";
import { Compressor } from "./Compressor.js";
import { optionsFromArguments } from "../../core/util/Defaults.js";
import { readOnly } from "../../core/util/Interface.js";
import { MultibandSplit } from "../channel/MultibandSplit.js";
import { Gain } from "../../core/context/Gain.js";
/**
* A compressor with separate controls over low/mid/high dynamics.
* @see {@link Compressor} and {@link MultibandSplit}
*
* @example
* const multiband = new Tone.MultibandCompressor({
* lowFrequency: 200,
* highFrequency: 1300,
* low: {
* threshold: -12
* }
* });
* @category Component
*/
export class MultibandCompressor extends ToneAudioNode {
constructor() {
const options = optionsFromArguments(MultibandCompressor.getDefaults(), arguments);
super(options);
this.name = "MultibandCompressor";
this._splitter = this.input = new MultibandSplit({
context: this.context,
lowFrequency: options.lowFrequency,
highFrequency: options.highFrequency,
});
this.lowFrequency = this._splitter.lowFrequency;
this.highFrequency = this._splitter.highFrequency;
this.output = new Gain({ context: this.context });
this.low = new Compressor(Object.assign(options.low, { context: this.context }));
this.mid = new Compressor(Object.assign(options.mid, { context: this.context }));
this.high = new Compressor(Object.assign(options.high, { context: this.context }));
// connect the compressor
this._splitter.low.chain(this.low, this.output);
this._splitter.mid.chain(this.mid, this.output);
this._splitter.high.chain(this.high, this.output);
readOnly(this, ["high", "mid", "low", "highFrequency", "lowFrequency"]);
}
static getDefaults() {
return Object.assign(ToneAudioNode.getDefaults(), {
lowFrequency: 250,
highFrequency: 2000,
low: {
ratio: 6,
threshold: -30,
release: 0.25,
attack: 0.03,
knee: 10,
},
mid: {
ratio: 3,
threshold: -24,
release: 0.03,
attack: 0.02,
knee: 16,
},
high: {
ratio: 3,
threshold: -24,
release: 0.03,
attack: 0.02,
knee: 16,
},
});
}
dispose() {
super.dispose();
this._splitter.dispose();
this.low.dispose();
this.mid.dispose();
this.high.dispose();
this.output.dispose();
return this;
}
}
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